#337ABB#337ABB

#337ABB is a mid, vivid cyan. Relative luminance 0.182; OKLCH L 56.6% C 0.123 H 249.2°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#337ABB
RGB	rgb(51, 122, 187)
HSL	hsl(209, 57%, 47%)
HSV	hsv(209, 73%, 73%)
CMYK	cmyk(72.7%, 34.8%, 0%, 26.7%)
CIE-LAB	lab(49.75, -0.09, -40.54)
CIE-LCH	lch(49.75, 40.54, 269.88°)
OKLab	oklab(56.58% -0.0436 -0.1152)
OKLCH	oklch(56.58% 0.123 249.2)
XYZ	xyz(17.2910, 18.2088, 49.6074)
Luminance	0.1821 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337ABB #BB7433

analogous

#33BBB8 #337ABB #3336BB

triadic

#337ABB #BB337A #7ABB33

tetradic

#337ABB #B833BB #BB7433 #36BB33

square

#337ABB #B833BB #BB7433 #36BB33

split-complementary

#337ABB #BB3336 #BBB833

monochromatic

#193B5B #265B8B #337ABB #5998D2 #89B6DF

Accessibility & contrast

On white

4.52

#337ABB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#337ABB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337ABB

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337ABB	#FFFFFF	#000000	##000000
##337ABB	1.00	4.52	4.64	4.64
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7DBE

Deuteranopia (green-blind)

#4971BA

Tritanopia (blue-blind)

#008992

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #337abb;
/* rgb */ color: rgb(51, 122, 187);
/* oklch */ color: oklch(56.6% 0.123 249.2);

Tailwind

colors: {
  custom: {
    50: '#7ca0d0',
    500: '#337abb',
    950: '#000000',
  },
}

SCSS

$custom: #337abb;
$custom-light: #7ca0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#337abb",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 187
  },
  "hsl": {
    "h": 208.676,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.5658,
    "c": 0.12315,
    "h": 249.2
  },
  "luminance": 0.18211
}

Semantic roles & 50–950 ramp

primary

#337ABB

secondary

#C9A381

accent

#9147E0

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #337ABB

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →